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Nanometer modified photocatalytic bamboo charcoal

A nano-modification and photocatalysis technology, which is applied in the direction of physical/chemical process catalysts, other chemical processes, chemical instruments and methods, etc., can solve the problems of low light utilization rate, narrow response wavelength, poor adsorption and decomposition effect, etc. The effect of low utilization

Inactive Publication Date: 2006-10-18
马晓波 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] In addition, the nano-modified carbon photocatalytic adsorption and bactericidal materials have not been hybridized or red-shifted. Therefore, the catalytic response wavelength of this material is relatively narrow, and it can only catalyze the response to ultraviolet light.
In actual use, ultraviolet light only accounts for 0.8% of the incoming light, the light utilization rate is low, and the adsorption and decomposition effect is poor under dark light conditions.

Method used

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  • Nanometer modified photocatalytic bamboo charcoal

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Experimental program
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Effect test

Embodiment 1

[0039] 1. Implement hybridization and red-shift technology on anatase nano-titanium dioxide, that is, prepare modified anatase nano-TiO by liquid phase gel method 2 Material.

[0040] Dissolve the alkoxide in TiO 2 and metal ions (platinum, iron, nickel) in organic solvents (among them, alkoxides, TiO 2 The mass ratio of metal ions (platinum, iron, nickel) is 0.4-0.6: 1: 0.1-0.2: 0.3-0.4: 0.2-0.3).

[0041] By adding distilled water to hydrolyze the alkoxide to form a sol, and to obtain a gel after gelation treatment, so that the metal ions and TiO 2 The particle surfaces recombine to form a compound semiconductor.

[0042] After drying and roasting at about 60°C-100°C, the modified anatase nano-TiO can be obtained. 2 Materials (trade name "Tifull", Shanghai Titanium Nano Technology Co., Ltd.).

[0043] The material is catalytic and can respond to light with a wavelength close to 800 nanometers, has higher photocatalytic activity, and has dark photocatalytic effect.

[0...

Embodiment 2

[0062] In addition to the modified anatase nano-titanium dioxide aqueous solution (concentration of 6-7%) improved by the hybrid redshift technology, which is uniformly coated on the surface of Phyllostachys pubescens and in the pore wall at a mass ratio of 1-3:500, other As in Example 1, the obtained photocatalytic bamboo charcoal particles have a diameter of 6-10 millimeters, and are made into various massive photocatalytic bamboo charcoal cakes such as spherical or block, wherein:

[0063] Fixed carbon component: 80 to 85% by mass

[0064] Titanium dioxide: 0.2 to 0.6% by mass

[0065] The rest are water, volatile matter, uncarbonized matter, etc.

Embodiment 3

[0067] In addition to the modified anatase-type nano-titanium dioxide aqueous solution (concentration of 5-7%) after the implementation of the hybrid redshift technology is uniformly coated on the surface of Moso bamboo and in the pore wall at a mass ratio of 1-2.5:500, other As in Example 1, the prepared photocatalytic bamboo charcoal is pressed into spherical or block photocatalytic bamboo charcoal cakes of various shapes, wherein:

[0068] Fixed carbon component: 80 to 85% by mass

[0069] Titanium dioxide: 0.2 to 0.5% by mass

[0070] The rest are moisture, volatile matter, ash and uncarbonized matter.

[0071] Tested by Shanghai Environmental Protection Product Quality Supervision and Inspection Center, the physical and chemical performance indicators of the finished product adsorption, decomposition, sterilization, purification, and recyclable photocatalytic function-enhanced bamboo charcoal materials are as follows:

[0072] Appearance: black particles

[0073] The m...

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Abstract

The present invention is nanometer modified photocatalytic bamboo charcoal and its preparation process. The preparation process includes the steps of: high pressure spraying nanometer hybridized and red shifted anatase type titania in fineness of 4-7 nm and in the mass fraction of 1-5 to 500 to the surface of bamboo, high temperature sealed heating at 100-800 deg.c for 20-25 days to carbonize, and crushing. It has bamboo charcoal grain size of 3-10 mm, fixed carbon content of 78-85 wt% and titania content of 0.2-1 wt%. Compared with common bamboo charcoal purificant, the present invention has powerful adsorption on vapor, harmful matter, impurity, etc, capacity of irreversibly decomposing adsorbed harmful matter and antibiotic effect. It has also longer photocatalytic response wavelength and higher air purifying effect.

Description

technical field [0001] The invention relates to a nano-modified photocatalytic bamboo charcoal and a manufacturing method thereof, more specifically, the present invention relates to a nano-modified photocatalytic bamboo charcoal mainly used for indoor and compartment air purification and a manufacturing method thereof. Background technique [0002] In recent years, due to the high development of industrialized society, the problem of environmental pollution has become increasingly serious. In this regard, various materials and methods for sterilization, disinfection, and air quality improvement have been developed. Among them, bamboo charcoal is widely used as an adsorption material or filter material for water purification or air purification to adsorb toxic and harmful components and impurities contained in water and air due to its fine carbon particles and strong adsorption capacity. [0003] For example, the Chinese patent application with the patent application number...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J21/06
Inventor 马晓波张育民
Owner 马晓波
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